Valve mechanism for motors, meters, &amp;c.



No. 630,643. Patented Aug. 8, I899.

n. BARBIE. VALVE MECHANISM FOR MOTORS, METERS, 8w.

(Application filed Apt. 28, 1898.)

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No.1630,643= v Patented Aug. 8, I899.

I R. BARBIE.

VALVE MECHANISM FOR MOTORS, METERS, 8L0.

(Applies-firm filed. Apr. 28, 1898.)

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UNITED STATES PATENT OEETCE.

ROBERT BARBIE, OF PHILADELPHIA, PENNSYLVANIA.

VALVE MECHANISM FOR MOTORS, METERS, 80G.

SPECIFICATION forming part of Letters'latent No. 630,643, dated August 8, 1899.

I Application filed Emma-1898. Serial No. 679,116. mama.)

T0 (ZZZ whmn it may concern.-

Be it known that 1, ROBERT BARBIE, a citizen of the United States, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented a new and useful Valve Mechanism, of which the following is a specification.

My invention relates to that class of devices used to control steam, air, gas, or water under pressure in and out of separate chambers, as found in pumps, motors, and liquidmeters.

My invention consists'of a central transversely-supported double-arm rocker, a 'convex-seated D slide-valve made to register with transverse elongated openings or ports,

all of which are located centrally betweenv connected twin piston-heads and inclosed within a single main cylinder, as will hereinafter appear.

Figure 1 represents a vertical pressure-re ceiving rod S. Fig. 2 shows connecting-link K. Fig. 3 represents an'isometrical view of double-arm rocker L. Fig. 4: represents isometrically the valve V. Fig. 5 shows a plan view of convex or under side of V. Fig. 6 is a side elevation of mechanism arranged within a cylinder shown in vertical longitudinal section.

In referring to accompanying drawings, 0 represents a main cylinder provided with longitudinal ports which form passage-ways from.

the center within said cylinder to the opposite ends thereof. Other openings I and 0 lead to or connect with the inlet and outlet pipes, respectively. 0 is also provided with a central vertical stuffing-box B and suitable end caps H and base, as required. The twin piston-heads P are provided with usual pack ing-rings and are connected together by rods R, or they may be formed from one casting within the chamber. Between the heads and over the port-holes is placed a convex-seated slide-valve V, a cavity 'n upon the under side thereof serving to alternately connect the passage-ways with the outlet 0. This valve has also transverse vertical projections having flat surfaces Y, the guide-rod bearings T, and may or may not require the stops m.

Above this valve V on a central transverse rod N isa double-arm rocker L, the lower arms X of which straddle the rod R and are brought in contact with the fiat surface Y.

By means of a link (see Fig. 2) the upper arm of the rocker connects with a vertical rod S, that passes through a stuffing-box B. When required, the end of N may also project through a similar box for purposes hereinafter explained. To the outward end of S may be attached means for depressing said rod. For this purpose I find a weight WV simplest in application, but prefer metal springs where quickness of motion is required. The end of this rod S may also connect with a train of recording-dials, as used in liquidmeters, being inclosed by a cover D.

It will be evident that in theintroduction of vapor or liquid under pressure through I said liquid would pass in direction of arrows and move the piston to the left, this action being the same as that of a reciprocating steam-engine. Having reached a given point of alongitudinal movement, the adjustable pushers A strike L near 00 and through the link K impart an upward movement to S, overcoming the depressing Weight or springs until L has passed forward and beyond a vertical line or center through S, when L will receive a quick forward thrust by reason of aforesaid depressing weight or springs, and the lower arms X striking V uponYwill actuate the valve and change the connections of the passages or ports and outlet 0 and will cause the piston to move to the left, or vice versa, the displacement of the piston being regulated by A, and thus measuring the quantity of liquid passing through. It will be evident that by suitable pawl-and-ratchet gear motion may be transmitted from S to usual registering mechanism; also, that a rod may be secured to P and be made to pass through H and then converted by means of crank into rotary motion. In this case N should extend outward through a stuffing-box similar to B, when it may be connected to crank-shaft by usual means now in use, and thus operate the inner valve V in unison therewith. I am aware that S maybe raised by L through a cam movement, replacing link K, also that A may be secured to L instead of P, and thus accomplish the same results. Therefore I do not desire to confine myself to the construction of these parts as shown, as

What I claim as new, and desire to secure by Letters Patent, is-

1. A cylinder havinga continuous straight bore of even diameter throughoutits length, ports opening into said cylinder at each end thereof and also near the middle thereof, an inlet and outlet port opening near the middle thereof, and a convex-seated D slide-valve within the cylinder and controlling the flow of fluids in said ports substantiallyasshown and for the purpose set forth.

2. A cylinder havingastraightbore of even diameter throughout its length, said cylinder consisting of a single piece of metal and having ports opening into each end thereof and also near the middle thereof, an outlet-port opening into the cylinder near the middle stantially asdescribed and for the purpose set forth.

ROBERT BARBIE \Vitnesses:

HARRY SCHNEEBELE, RENA SCITNEERELE. 

